CERo Therapeutics (CERO) shares were 27% lower pre-bell Wednesday, paring Tuesday's rally.
Borealis Foods (BRLS) stock was down 22% following a 6.6% increase in the previous session.
Eyenovia (EYEN) shares were 16% lower, shaving gains from the previous session.
Regencell Bioscience (RGC) stock was down 12% after a 30% increase on Tuesday.